is in northern california but it will slowly make its way towards the bay area. make sure you keep your umbrella canand thhany take a look at livermore, san francisco, nev., limited visibility. your headlights and windshield wipers should be on with a reduced speed the fog in be dangerous. take a look at novado, san francisco, keeping your umbrella handy. even 40's and the south bay. you are at 35 degrees in vallejo. ahwe do have rainfall on the will wait is a light system. we are looking at clear conditions we will time it out on futurecast your kron 4 7 day around the bay and what we can expect for the rest of the week. >> still to come on kron 4 news of violence is th highlight highest in the u.s., a thousand away there was another horrific attack on an elementary school in china. first, this live look outside from san francisco you can see the paper urges overcast. the headlights on the bay bridge, ", chris, we will be back up the be- bridge and crisp bay bridge >> in central china... police have arrested a man who stabbed 22 children and one adult outside an